Class 10 Practice - Level 3 - Light - Reflection and Refraction - Set 1

Total questions: 15

An object placed 10 cm from a concave mirror with a focal length of 5 cm .determine the position and nature of the image formed?

Topic: Reflection of Light

10 cm , real and inverted

10 cm virtual and erect

10cm , real and erect

10 cm , virtual and inverted

None

A concave mirror produces a three times magnified image of an object placed in front of it. If the focal length of the mirror is 15 cm ,at what distance from the mirror is the object placed?

Topic: Reflection of Light

10 cm

20 cm

30 cm

45 cm

None

An object is placed at the center of curvature of a concave mirror . the focal length of the mirror is 10cm . what is the distance between the object and its image?

Topic: Reflection of Light

10 cm

20 cm

30 cm

40 cm

None

A light ray passes through a glass slab (n=1.5) and then enters water (n=1.33)at an angle of incidence of $\displaystyle 45{}^\circ $ .what is the angle of refraction in water?

Topic: Reflection of Light

$ \displaystyle 28.1{}^\circ $

$ \displaystyle 30.7{}^\circ $

$ \displaystyle 32.5{}^\circ $

$ \displaystyle 35.4{}^\circ $

None

A beam of light enters from air (n=1.00) into a medium with a refactive index of 2.00 at an angle of $ \displaystyle 30{}^\circ $ . calculate the angle of refraction?

Topic: Reflection of Light

$ \displaystyle 14.5{}^\circ $

$ \displaystyle 15.0{}^\circ $

$ \displaystyle 15.5{}^\circ $

$ \displaystyle 16.0{}^\circ $

None

A light ray in water (n=1.33) is incident on a glass slab (n=1.50) at an angle of $ \displaystyle 60{}^\circ $ . what is an angle of refraction in the glass ?

Topic: Reflection of Light

$ \displaystyle 35.3{}^\circ $

$ \displaystyle 37.8{}^\circ $

$ \displaystyle 36.9{}^\circ $

$ \displaystyle 38.2{}^\circ $

None

A concave mirror has a focal length of 20 cm .an object is placed 60 cm from the mirror . calculate the position and nature of the image formed .

Topic: Spherical Mirrors

30 cm , real and inverted

40 cm ,virtual and erect

30 cm ,virtual and erect

40 cm , real and inverted

None

A concave mirror has a focal length of 15 cm . An object is placed 45 cm from the mirror . determine the magnification of the image formed.

Topic: Spherical Mirrors

-0.5

-1

-1.5

-2

None

A convex lens has a focal length of 10cm . An object is placed 15cm from the lens. determine the position and nature of the image formed?

Topic: Refraction by Lenses

30 cm, Real and inverted

30 cm , Virtual and erect

6 cm, Real and inverted

6 cm , Virtual and erect

None

10.

A concave lens of focal length 20 cm forms an image 10 cm from the lens. The object distance is?

Topic: Refraction by Lenses

30 cm

20 cm

15 cm

10 cm

None

11.

A convex lens forms a real and inverted image of an object placed 40 cm from the lens. If the image is formed 20 cm from the lens, what is the focal length of the lens?

Topic: Refraction by Lenses

30 cm

40 cm

15 cm

10 cm

None

12.

A person with a near point of 50 cm is unable to read a book held at a normal reading distance of 25 cm . what is the power of the lens required to correct his vision?

Topic: Human Eye

+1.5 D

+2.0 D

+2.5 D

+3.0 D

None

13.

A person has a far point of 1.5m.what type of lens is required to correct this defect and what is its power?

Topic: Human Eye

Convex lens , +0.67D

Concave lens , -0.67D

Convex lens , +1.5D

Concave lens , -1.5D

None

14.

A person with hypermetropia uses a convex lens with a power of +2.5D . what is the focal length of the lens?

Topic: Human Eye

0.4 m

0.5 m

0.25 m

0.2 m

None

15.

A person with presbyopia needs bifocal lenses. if the near vision correction requires a power of +1.5 D and the distance vision correction requires -0.5D , what is the combined power of the bifocal lens?

Topic: Human Eye

+1.0 D

+2.0 D

+1.5 D

+1.5 D and 0.5 D

None

1 out of 15

Time's up

Class 10 Practice - Level 3 - Light - Reflection and Refraction - Set 1

Welcome back